Sgs 51367 Screw Machine Drill Bit 37/64 Solid Carbide

Product Description

The SGS 51367 is a screw machine length drill bit engineered for high-performance drilling in demanding metal-cutting applications. Built from solid carbide and finished with an AlTiN (Ti-NAMITE-A) coating, this bit delivers excellent heat resistance and wear life when cutting alloy steels and titanium. It features a 37/64 inch (0.5781 inch) cutting diameter, a 145-degree notched point angle for aggressive self-centering, and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The right-hand cut, regular spiral flute design promotes efficient chip flow. Machinists and tooling professionals working in production or job-shop environments are the primary users.

This drill bit is suited for screw machine and short-run machining operations where rigidity and precision are critical. Its screw machine length profile — 4-9/16 inches overall — provides added stiffness compared to jobber-length bits, making it well suited for CNC machining centers, turret lathes, and automatic screw machines. Primary workpiece materials include alloy steels and titanium alloys. The 3xD flute-to-diameter ratio and two-margin geometry support accurate hole location and finish in tough materials.

Key Features

• Solid carbide construction for rigidity and extended tool life in hard materials
• AlTiN (Ti-NAMITE-A) coating resists heat and oxidation during high-speed cutting
• 145-degree notched point self-centers and reduces walking on entry
• Web-thinned, tapered web lowers drilling thrust and improves chip clearance
• Straight shank at 0.6250 inch diameter fits standard collets and chucks
• Screw machine length (4-9/16 inches OAL) provides greater rigidity than jobber-length alternatives

Compatibility

Designed as an OEM-style replacement and standard tooling option for screw machine length solid carbide drill applications in the 0.5000 to 0.6000 inch diameter range, Series 135.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the machine powered down and all spindle motion stopped. Secure the straight shank firmly in a compatible collet, drill chuck, or toolholder rated for the shank diameter before operation. Verify spindle speed and feed rate are appropriate for the workpiece material and cutting diameter before engaging the cut. Coolant-through is not supported on this bit, so adequate external coolant or cutting fluid application is recommended when drilling titanium or alloy steel.